Knotter



H. v. LEWIS Oct. 27, 1931.

kuo'rrnn Filed June 9. ,1927

I Allor ney Patented Oct. 27; 1931 PATENT OFFICE mm v. nnwIs-or CAMP KILBY, "ALABAMA KNOTTER Application filed June 9, 1927. Serial No. 197,742.

My invention relates to'a thread guide for knotters and is more particularly adapted to knotters which tie what is known as aweavers knot, because in such knotters it is es-' sential', to prevent tying loop knots, that the threads be presented to the tyinghead in proper relation on opposite sides of the thread separating points now provided on each side ofsuch 'knotters. I

The thread separating points heretofore provided on knotters for tying weavers knots stand about high and in transverse alignment across the center of the knotter head. Larger points hereafter'called side guide pointsare provided on the outer side of the knotter head to prevent the adjacent thread slipping off the knotter. It requires care and precision on the operators part to prevent the threads falling together on the same side of one or. all of the separating points, which would result in the knotter either failing to tie a knot or tying a loop knot. This condition acts to greatly slow up the speed of use of the knotter.

My invention contemplates the provision of a raised transverse guide standing in the plane of the tying head and the separating points which is so designed and arranged that the possibility of initial misplacement of the threads relative to such points is practically eliminated and the speed of operation of the knotter thereby greatly increased.

One object of my invention is to adapt the supplemental guide for mounting as an attachment over the thread separating points and causing it to extend transversely far enough to prevent the threads crossing between such points so as to tie a loop knot.

A further object is to adapt the last mentioned guide not to'interfere with moving parts of the knotter and to this end it is preferably of arched shape and attached at one end only to the knotter, though it is to be understood that my invention is not limited to that specific structure.

A further ob 'ect is to increase the height ofthe side guide points to obtain surer and quicker operation. This I prefer to do by means of an arched guide which for best results rises above the level of the arched sepside guide points or projections 12'adapted arator guide, being itself preferably of arched shapeand attached or joined to the guide points. I shall describe my invention in the form of an attachment to anexisting knotter which forms no'part of my invention but it is to be understood that my invention contemplates the modification in the design of such knotteras manufactured to attain the objects and advantages herein pointi ed out. co

According to the drawings Fig. 1 is a side view of a standard type of knotter showing in side elevation my im proved attachment mounted thereon. N

Fig. 2 is a fragmental view from the reverse side of Fig. 1. v

Fig. 3 is a perspective view of the attachment with the associated elements of the knotter shown in dotted lines.

Fig. 4 is a detail view in side elevation of my improved knotter guide as viewed in Fig. 2. g I

Fig.5 is an end view ofFig. 4.

Similar reference numerals refer to similar parts throughout the drawings.

In the embodiment of my invention illustrated, I designate an existing knotter adapted'for the tying of weavers knots by the numeral 6, the. same having the customary trigy ger 7, handle loop 8, fixed guide point 9, movable guide point 10 on the scissor lever, and, interposed between said guide points, the tying-head 11. The side plates of the knotteras now manufactured provide fixed toengage and guide the yarn. the point 9 being usually formed on one of these side plates at the base of its projection 12. In using such a knotter it is necessary that the threads 14 and 15 to be knotted shall be caused to lie onopposite sides of the elements 9, 10 and 11 (see Fig. 3), and when so arranged they will be engaged by the tying head 11 and tied into a weavers knot in a manner well understood by those skilled in the art and which need not be here illustrated fully and described as the construction and operation of such knotter forms no essential part of my present invention, The projections 12 stand up high so as to prevent the adjacent thread passing or slipping off the knotter head, but the chief objection to these knotters lies in the fact that care is required to properly locate the threads.

initially relative to the elements 9, 10 and 11 and this so slows up the use of the knotter that, notwithstanding it ties the most satisfactory knot, it is being rejected by many mills.

The object of my invention is to adapt the type of the knotter in question so that the threads can be instantly adjusted initially to proper position for knotting, thereby preventing the possibility of either thread as placed therein crossing between the points 9 and 10 and causing the tying of a loop knot instead of a weavers knot, or falling both on the same side of points 9 and 10 in which event no knot will be tied.

I have shown my invention in the form of an attachment, but it is to be understood that the added structural elements may be formed as a part of the original machine or applied as an attachment within the contemplation of my invention. As shown, the attachment is in the form of a metal stamping having at one side a base portion 16 with an elongated slot 17 therein adapted to receive a screw 18 which forms a part of, or is substituted for a standard screw in the knotter. Above the base 16 the plate is bifurcated, one leg being bent in a plane normal to the base to form a high arch 19 which comprises the legs 20 and 21. The other leg is narrower and stiffer and also is arched to form the guide 22 which lies in a transverse plane divergent from that of the arch l9 and comprises the leg 23 on one side and the leg 24 on the other. The-legs 20 and 21 fit snugly against the sides of the knotter head and rise materially above the height of the projections 12 to which they are secured by a screw 25 and nut 26. The screws 18 and 25 give a two point connection for the guide attachment and will rigidly hold its transverse guides 19 and 22 in correct operating position.

It will be observed that the guide 22 lies in a transverse plane with the knotter elements 9, 10 and 11, and its free leg 24 extends downwardly towards, and has its V- shaped lower end 27 positioned above and spaced from, the point 10 in the knotter head. The arch in this loop 22 rises high enough at its center to. clear the thread stripper or kick-off 28 as it moves responsive to the trigger action in tying the knot. With the loops 19 and 22 thus provided on the kontter head, the operation of the knotter is as follows.

The operator holds the threads 14 and 15 parallel and so that one stands slightly above the other and moves the knotter head rapidly towards-them, it being only necessary to direct the guide 22 between the threads and prevent the higher thread from passing over the arch 19. This will bring the threads instantly into the position shown in Fig. 3 in which a weavers knot will be tied and the tied ends will freely escape between the point 10 and the free end 27 of the guide 22. The guide 22 thus forms a guard extending transversely of the head above the elements 9, 10 and 11 which will prevent either thread, as initially positioned, crossing between the points 9 and 10 and thus insures that the thread 14 will fall on one side of both points and the thread 15 on the other. When this occurs the weavers knot will be tied. If the guide or guard element 22 is to be rigidly mounted, which I prefer, its shape must be such as not to interfere with the movement of the stripper 28 and it need be arched only to the extent necessary to clear same,

It is to beunderstood that the guide 22 serves as a continuation and extension of the stop elements 12 on eachside of the knotter head and by raising it higher I make the stop more effective. -In fact afterthe giude is mounted its elements 20 and 23 overlie and take the place of the elements 12 and 9, respectively, and therefore where the improved guide is built into the machine and not used as an attachment these elements 9 and 12 can be omitted. The device involves but small change in the cost of the knotter but is of very great benefit in facilitating the manipulation of the machine.

Though I have described with great particularity the details of the embodiment of the invention herein shown, it is not to be construed that I am limited thereto, as changes in arrangement and substitution of equivalents may be made by those skilled in the art Without departing from the invention as defined in the appended claims.

Having thus described my invention, what I claim. as new and desire to secure by Letters Patent, is

1. Aknotter adapted to tie a weavers knot comprising, a tying head, a kick-ofi', and side guides for the threads to be knotted, one guide being fastened at one side of the knotter and disposed transversely above the tying head and adapted to prevent threads as initially positioned bV the guides crossing the knotter at an angle.

2. A knotter adapted to tie a weavers knot comprising, a tying head, a kick-off, and side guides for the threads to be knotted, one guide being fastened at one side of the knotter and disposed transversely above side guides and the tying head and adapted to prevent-threads as initially positioned by the guides crossing the knotter at an angle between the side guides.

3. The combination with a knotter for tying weavers knots, having side thread guides and an interposed tying head. of a supplemental transverse thread guide mounted at 1 one end to rise above and overhang the corresponding side guides at each side of the knotter and prevent either thread as initially positioned by the guides.

4. The combination with a knotter for tying Weavers knots, having opposite side thread guides, one fixed and one movable with the thread cutting scissor lever, and a tying head interposed between said guides, of a supplemental guide mounted in a vertical transverse plane to overlie-the tying head and having one free end substantially over said movable guide. 7

5. A knotter according to claim 4, in which the supplemental guideris rigidly mounted and arched to .rise to a substantially height above the level of the said side guides and tying head.

6. A knotter of the character described having thread guiding means and tying means, a pair of divergent fixed arched guides rising to different heights, the lower being free at one end and disposed to overlie said thread guiding and tying means and adapted to position the threads on opposite sides of the said thread guiding and tying means.

7. An attachment for knotters comprising thread separating guides and an interposed tying head, the attachment having an inner transverse guide overhanging the said thread separatingguides and tying head, and an outer stop rislng substantially above the inner guide.

8. An attachment accordlng to 01311117 in which the transverse guide and outer stop are integral divergent members adapted for attachment by standard screws of the knotter.

9. An attachment according to claim 7, in which the transverse guide and outer and stop are rigid divergent elements.

10. An attachment according to claim 7, in which the transverse guide and outer and stop are rigid divergent elements having common attaching means.

11. An attachment according to claim 7, in which the transverse. guide and stop are rigid arched divergent elements, the stop arch being secured at both sides, and the guide arch at one side, to the knotter.

12. A knotter adapted to tie a, weavers knot comprising a tying head and thread separating guides on each side of said head to initially position the threads, one guide extending up crosswise of the knotter for the purposes described.

13. A knotter adapted to tie a weavers knot comprising a tying head and thread separating guides on each side of said head to initially position the threads, one guide being arched and extending up and transversely over and beyond the tying head.

14. A knotter adapted to tie a weavers knot comprising a tying head and thread separating guides on each side of said head to position.

HARLEN V. LEWIS. 

